SAHM losing it

Ugh I’m so tired. 16 months of waking up at 5am, 16 months at home, 16 months of rarely seeing adults. I’m so depressed lately. I’ve never thought of hurting myself before but lately I feel like just throwing myself out a window. Baby daddy tries to help but he thinks cause he works that his sleep is more important, so I get one day a week if I’m lucky where I get 8 hours of sleep. I’m going to lose it. Advice mamas?